09 dezembro 2017

Humans Have Been Arguing About What Color to Paint the Walls Since 3,000 BCE

Humanity’s ancestors 5,000 years ago brightened up their Stone Age homes by painting the insides, according to new archaeological evidence from the Orkney Islands in Britain. They used red, yellow and orange pigments from ground-up minerals and bound it with animal fat and eggs to make their paint. Because who wants to live in a plain stone hut, even in 3,000 BCE?

The new Orkney finds are the earliest ever example of man using paint to decorate their properties in Britain, if not in Europe.

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gamma–crucis: The Crab Nebula is a supernova remnant and...













gamma–crucis:

The Crab Nebula is a supernova remnant and pulsar wind nebula found in the constellation of Taurus. At it’s center lies a neutron star 28-30km across, that emits radiation from gamma rays to radio waves. It is not visible to the naked eye, but can be seen using a telescope or binoculars.

Image Credit: NASA, ESA, ESO

nasa, astronomy
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The first documented use of fireworks in England was in 1486, at King Henry VII’s wedding.

The first documented use of fireworks in England was in 1486, at King Henry VII’s wedding.

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gamma–crucis: The Tarantula Nebula, also known as NGC...













gamma–crucis:

The Tarantula Nebula, also known as NGC 2070, was thought to be a star until in 1751 when Nicolas Louis de Lacaille recognized its nebular nature. As an extremely luminous non-stellar object, it is so bright that if it were as close as the Orion Nebula, it would cast shadows on Earth. 

Image Credit: NASA, ESO, ESA

nasa, astronomy
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